Global Patent Index - EP 1384864 A2

EP 1384864 A2 20040128 - Variable valve operating system of engine enabling variation of working angle and phase

Title (en)

Variable valve operating system of engine enabling variation of working angle and phase

Title (de)

System für verstellbare Gaswechselventile einer Brennkraftmaschine das eine Variation von Öffnungsdauer und Öffnungsphase ermöglicht

Title (fr)

Système de distribution variable pour moteur à combustion interne, qui permet de varier la phase et la durée d'ouverture des soupapes

Publication

EP 1384864 A2 20040128 (EN)

Application

EP 03016307 A 20030718

Priority

JP 2002211993 A 20020722

Abstract (en)

In a variable intake-valve operating system for an engine enabling a working angle of an intake valve and a phase at a maximum lift point of the intake valve to be varied, a variable working-angle control mechanism is provided to continuously change the working angle of the intake valve and a variable phase control mechanism is provided to continuously change the phase of the intake valve. A control unit is configured to be electronically connected to both the two variable control mechanisms, to simultaneously control these control mechanisms responsively to a desired working angle and a desired phase both based on an engine operating condition. The control unit executes a synchronous control that a time rate of change of the working angle and a time rate of change of the phase are synchronized with each other in a transient state that the engine operating condition changes.

IPC 1-7

F01L 13/00; F01L 1/34

IPC 8 full level

F01L 1/34 (2006.01); F01L 13/00 (2006.01); F02D 13/02 (2006.01)

CPC (source: EP US)

F01L 1/022 (2013.01 - EP US); F01L 1/34 (2013.01 - EP US); F01L 13/0026 (2013.01 - EP US); F01L 1/024 (2013.01 - EP US); F01L 2001/0537 (2013.01 - EP US); F01L 2013/0073 (2013.01 - EP US); F01L 2800/00 (2013.01 - EP US)

Citation (applicant)

Designated contracting state (EPC)

DE FR GB

DOCDB simple family (publication)

EP 1384864 A2 20040128; EP 1384864 A3 20080827; EP 1384864 B1 20130925; CN 1304736 C 20070314; CN 1495347 A 20040512; JP 2004052678 A 20040219; JP 3873834 B2 20070131; US 2004011313 A1 20040122; US 6820579 B2 20041123

DOCDB simple family (application)

EP 03016307 A 20030718; CN 03133103 A 20030722; JP 2002211993 A 20020722; US 45225203 A 20030603